(1509) Proposal to conserve the name <i>Centaurea</i> (<i>Compositae</i>) with a conserved type

Greuter, Werner; Wagenitz, Gerhard; Agababian, Mariam; Hellwig, Frank H.

doi:10.2307/1224746

Cited by 37 publications

(22 citation statements)

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“…The separation of the genus Acosta resulted from a split of the heterogeneous genus Centaurea as proposed by Löve and Löve (1961a) and followed by other authors (Holub 1972(Holub , 1973(Holub , 1974Soják 1972;Dostál 1973). Following recent molecular phylogenetic studies in Centaurea (Susanna et al 1995;Wagenitz and Hellwig 1996;Garcia-Jacas et al 2000, 2001, 2006, new generic limits were suggested (Greuter et al 2001). A separate genus Rhaponticoides Vaill., previously known as Centaurea sect.…”

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confidence: 99%

“…It is phylogenetically distinct from the generic core and includes the original type species of the genus Centaurea (Greuter 2003;Greuter et al 2005). Therefore, a proposal was published and later approved, to conserve the name Centaurea with a new type, namely C. paniculata L. (Greuter et al 2001;Brummitt 2004), a species traditionally placed in Acosta. Following this treatment, the name Acosta could not be applied for a separate genus, even if a narrow concept of the genus Centaurea is applied.…”

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Diploid and Tetraploid Cytotypes of Centaurea stoebe (Asteraceae) in Central Europe: Morphological Differentiation and Cytotype Distribution Patterns

et al. 2008

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The taxomically critical species Centaurea stoebe is represented in Central Europe by a diploid (2n=18) and a tetraploid (2n=36) cytotype. Their morphological differentiation and taxonomic treatment is still controversial. Karyological (chromosome numbers and flow cytometric measurements) and multivariate morphometric analyses were used here to address cytotype distribution patterns and their morphological differentiation. Material from 38 localities (771 individuals) in Slovakia, Hungary and Austria, including type localities of the names traditionally applied to the different cytotypes, was sampled and evaluated using both morphometric and karyological approaches. The morphological tendency towards cytotype differentiation is evident only at a population level, and is blurred at the level of individual plants. Diploid populations prevail in the area studied, as well as throughout Europe; mixed-cytotype populations were also found. The present data, namely the weak morphological distinction, largely sympatric occurrence of the cytotypes, and the existence of mixed-cytotype populations, favour taxonomic treatment as a single species, without recognition of infraspecific units.

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Diploid and Tetraploid Cytotypes of Centaurea stoebe (Asteraceae) in Central Europe: Morphological Differentiation and Cytotype Distribution Patterns

et al. 2008

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“…Although precedent exists to conserve the name of a large genus with a new type, e.g., Hedysarum (Choi & Ohashi, 1998;Brummitt, 2000) and Centaurea (Greuter & al. 2001;Brummitt, 2004b), the individual circumstances of such cases must be carefully examined, particularly regarding the impact on the taxon that stands to lose the use of the original type.…”

Section: Precedentmentioning

confidence: 99%

Acacia: the case against moving the type to Australia

Luckow

Hughes

Schrire

et al. 2005

TAXON

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Recent studies have shown that Acacia is polyphyletic and must be split into five genera. Proposal 1584 would retypify Acacia : the type of the Australian taxon A. penninervis would be conserved over the current lectotype (A. scorpioides ) of an African taxon. We disagree with the recommendation of the Spermatophyte Committee to endorse this proposal. Contrary to Article 14.12 of the ICBN, no detailed case against conservation was presented in Proposal 1584. We maintain that there are strong arguments against conservation, such as the large number of countries that would be affected, the economic importance of the extra‐Australian species, and the economic burden placed on developing countries. Acceptance of this proposal would also violate the guidelines for conservation which clearly state that the principle of priority should prevail when conservation for one part of the world would create disadvantageous change in another part of the world.

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“…The genus Centaurea is one of the largest in the Asteraceae, containing between 400 or even 700 species (Wagenitz & Hellwig 1996;Greuter et al 2001) distributed mainly in the Old World and has been well studied for its taxonomy, nomenclature, and problems of species delimitation (Bremer 1994;Vanderhoeven et al 2002;Koutecky 2007;Susanna & Garcia-Jacas 2007Vonica & Cantor 2011). It follows, therefore, that these species are difficult to identify because of their morphological variability and ability to hybridize.…”

Section: Introductionmentioning

confidence: 99%

Cytogenetic characterization and nuclear DNA content of three North African endemic Centaurea species

Benamara-Bellagha

Baziz

Pustahija

et al. 2014

Plant Biosystems - An International Journal Dealing with all As

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Three endemic Centaurea species from North Africa are investigated for the first time by chromomycin fluorochrome banding for GC-rich DNA distribution, fluorescence in situ hybridization for physical mapping of rRNA genes, and flow cytometry for genome-size assessment. Investigated species belong to three different sections and possess three basic chromosome numbers:The number and distribution of chromomycin positive bands (CMA þ ) and 18S-5.8S-26S (35S) rDNA loci were different among investigated species and ranged from 6 to 80 chromomycin bands and from 2 to 6 35S rDNA loci. The three species have just one 5S rDNA locus at intercalary position on a separate chromosome pairs, except in the case of C. musimonum in which both rDNA loci were localized on the same chromosome. All rDNA loci were colocalized with CMA þ bands, except three 35S in C. musimonum. Genome size ranged from 2C ¼ 1.66 to 2C ¼ 2.86 pg in diploid species (C. musimonum and C. maroccana, respectively) and to 2C ¼ 4.51 pg in tetraploid C. tougourensis subsp. tougourensis.

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(1509) Proposal to conserve the name Centaurea (Compositae) with a conserved type

Cited by 37 publications

References 0 publications

Diploid and Tetraploid Cytotypes of Centaurea stoebe (Asteraceae) in Central Europe: Morphological Differentiation and Cytotype Distribution Patterns

Diploid and Tetraploid Cytotypes of Centaurea stoebe (Asteraceae) in Central Europe: Morphological Differentiation and Cytotype Distribution Patterns

Acacia: the case against moving the type to Australia

Cytogenetic characterization and nuclear DNA content of three North African endemic Centaurea species

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